How to Disable SSL in Thunderbird for Avast!

Written by gabriele sturmer
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Many e-mail accounts use the security technology SSL to encrypt the connection when you send or receive an e-mail. This helps ensure that others cannot read the information sent over the connection. Avast!'s antivirus program include a feature that provides SSL encryption for your e-mail accounts, and it requires that you disable SSL within your e-mail program. If any of the email accounts in the Thunderbird e-mail client require SSL, you need to remove this setting so that Avast! can properly scan your e-mail for viruses.

Skill level:
Moderately Easy


  1. 1

    Double-click the round orange "Avast!" icon in the notification tray to open the main Avast! program window. Click "Real-Time Shields" in the window's left pane and select "Mail Shield."

  2. 2

    Click "Expert Settings," "SSL Accounts" to view a list of your e-mail accounts. Select "SSL" from the "Encryption" drop-down list for each account listed on the page, then click "OK" at the bottom of the window. If Avast! previously notified you about a specific e-mail account that needed SSL disabled in Thunderbird, you only have to select SSL for that specific account.

  3. 3

    Open Thunderbird, then click the "Tools" menu and select "Account Settings." Select your e-mail account in the left pane, then click "Server Settings." Select "None" from the "Connection Security" drop-down menu under the Security Settings section. This also resets the default ports for the email account. Repeat the process for each account that needs SSL disabled.

  4. 4

    Click "OK" at the bottom of Thunderbird's Account Settings window to disable SSL for each account you selected.

Tips and warnings

  • If your e-mail provider requires SSL, you may have problems accessing your e-mail if you disable SSL in Thunderbird and fail to enable SSL in the Avast! Mail Shield.

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